agenttesla | 12ea1945c3ad58e5b1c9e32028fe06293603b518aa41a83907c80ccec0303a4e

General

Target

quotation,pdf.exe
Size

938KB
MD5

4ef80cd3ca8c2ca4a8ff0e932d68eab7
SHA1

a6091f0320d4bb07af3dc30869e2128b3427d2d0
SHA256

dfa3383539e38b2ee4b96d6bf2b1f89e2d1923f5fa533bb77276c09d3300e2ea
SHA512

3217680f8d8943becd9cb5b9bf777d21e2d2b52f8971d4c1598c0367674ff7891ac7081a0600b8a5e9cebd903b82a920ef64e544f497d581cf79bcde84c569c4

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.1and1.mx
Port:
587
Username:
fpalmab@marelub.com.mx
Password:
Mare1##007

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/272-64-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/272-65-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/272-66-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/272-67-0x00000000004610CE-mapping.dmp	family_agenttesla
behavioral1/memory/272-69-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/272-71-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

quotation,pdf.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	quotation,pdf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	quotation,pdf.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

quotation,pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	quotation,pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	quotation,pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	quotation,pdf.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

quotation,pdf.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	quotation,pdf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	quotation,pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

quotation,pdf.exe

description pid process target process

PID 2000 set thread context of 272 2000 quotation,pdf.exe quotation,pdf.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1692 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

quotation,pdf.exequotation,pdf.exe

pid process

2000 quotation,pdf.exe
272 quotation,pdf.exe
272 quotation,pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

quotation,pdf.exequotation,pdf.exe

description pid process

Token: SeDebugPrivilege 2000 quotation,pdf.exe
Token: SeDebugPrivilege 272 quotation,pdf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

quotation,pdf.exe

pid process

272 quotation,pdf.exe

description	pid	process	target process
PID 2000 set thread context of 272	2000	quotation,pdf.exe	quotation,pdf.exe

pid	process
1692	schtasks.exe

pid	process
2000	quotation,pdf.exe
272	quotation,pdf.exe
272	quotation,pdf.exe

description	pid	process
Token: SeDebugPrivilege	2000	quotation,pdf.exe
Token: SeDebugPrivilege	272	quotation,pdf.exe

pid	process
272	quotation,pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

quotation,pdf.exe

description	pid	process	target process
PID 2000 wrote to memory of 1692	2000	quotation,pdf.exe	schtasks.exe
PID 2000 wrote to memory of 1692	2000	quotation,pdf.exe	schtasks.exe
PID 2000 wrote to memory of 1692	2000	quotation,pdf.exe	schtasks.exe
PID 2000 wrote to memory of 1692	2000	quotation,pdf.exe	schtasks.exe
PID 2000 wrote to memory of 432	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 432	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 432	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 432	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe
PID 2000 wrote to memory of 272	2000	quotation,pdf.exe	quotation,pdf.exe

outlook_office_path 1 IoCs

Processes:

quotation,pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	quotation,pdf.exe

outlook_win_path 1 IoCs

Processes:

quotation,pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	quotation,pdf.exe

C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KKZYIrzH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1881.tmp"
2⤵
- Creates scheduled task(s)
PID:1692

C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe"
2⤵
PID:432

C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:272

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1881.tmp
Filesize
1KB

MD5
2eec7e8742179d56bdce7734274fa128

SHA1
8fe533b8f862b311c6d4b05bba4e168b3d089d8f

SHA256
e7ae5e05c9f9134324342e7d3a9eaff4cdccaefe0aa49608cf7d4881831e81d3

SHA512
4cc6b112f2cef002b86f23e1018919daac89349f46c76a21b51c570d7e078af179aac8f3fe7655e5b50d5a68f166fb506baf6fd3dd5f86e09b16267f5c73c7ed

Download Submit
memory/272-64-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/272-66-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/272-71-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/272-69-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/272-67-0x00000000004610CE-mapping.dmp

Download
memory/272-65-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/272-61-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/272-62-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1692-59-0x0000000000000000-mapping.dmp

Download
memory/2000-54-0x0000000000DB0000-0x0000000000EA0000-memory.dmp

Filesize
960KB

Download
memory/2000-55-0x0000000075221000-0x0000000075223000-memory.dmp

Filesize
8KB

Download
memory/2000-56-0x0000000000580000-0x0000000000590000-memory.dmp

Filesize
64KB

Download
memory/2000-58-0x00000000053F0000-0x0000000005466000-memory.dmp

Filesize
472KB

Download
memory/2000-57-0x0000000005160000-0x0000000005204000-memory.dmp

Filesize
656KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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